Section 4 - Operating Inspections; General - York YR TB TB T0 Installation Operation & Maintenance

FORM 160.81-NOM1
ISSUE DATE: 10/3/2020
SECTION 4 – OPERATING INSPECTIONS

GENERAL

By following a regular inspection using the display
readings of the OptiView Control Center, and mainte-
nance procedure, the operator will avoid serious oper-
ating difficulty. The following list of inspections and
procedures should be used as a guide.
Daily
1. Check OptiView Control Center displays.
2. If the compressor is in operation, check the bear-
ing oil pressure. Also check the oil level in the oil
reservoir. Drain or add oil as necessary.
3. Check entering and leaving condenser water pres-
sure and temperatures for comparison with job
design conditions.
4. Check the entering and leaving chilled liquid tem-
peratures and evaporator pressure for comparison
with job design conditions.
5. Check the condenser saturation temperature
(based upon condenser pressure sensed by the
condenser transducer).
6. Check the compressor discharge temperature.
During normal operation discharge temperature
should not exceed 212°F (100ºC).
7. Check the compressor motor voltage and current
(amps) at E-M starter on the Control Center dis-
play for Solid State Starter units.
8. Check for any signs of dirty or fouled condenser
tubes. (The temperature difference between water
leaving condenser and liquid refrigerant leaving
the condenser should not exceed the difference
recorded for a new unit by more than 4°F (-16ºC).
9. Verify proper water treatment.
10. Press the "STATUS" key whenever the display
indicates so. This allows any warning messages
to be displayed.
JOHNSON CONTROLS
Weekly
Check the Refrigerant charge.
Quarterly
Perform chemical analysis of oil.
Semi-Annually (or more often as required)
1. Change and inspect compressor oil filter element.
2. Oil return system
a. Clean oil filter.
b. Check operational of eductor for foreign
particles.
3. Check controls and safety cutouts.
Annually (more often if necessary)
1. Drain and replace the oil in the separator oil sump.
2. Evaporator and Condenser:
a. Inspect and clean water strainers.
b. Inspect and clean tubes as required.
c. Inspect end sheets.
3. Inspect and service electrical components as nec-
essary.
4. Perform chemical analysis of system.
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